Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method and system for preparing porous bricks from raw sludge
The invention belongs to the field of solid waste resource utilization, and relates to a method and a system for preparing a sintered porous brick. The method comprises the following steps: carrying out pyrohydrolysis on raw sludge or a mixture of sludge and kitchen biogas residues to obtain a solid-liquid mixture; carrying out solid-liquid separation on the solid-liquid mixture to obtain a solidphase and a liquid phase; uniformly mixing the solid phase with a forming agent, and carrying out compression molding to obtain a formed green body with the water content of 20-30%; carrying out anaerobic microwave pyrolysis on the formed green body to obtain a preheated green body; and carrying out oxygen-enriched high-temperature sintering on the preheated green body, and cooling the sintered brick to obtain the porous brick. According to the invention, efficient solidification of heavy metals in sludge and sufficient combustion of organic matters can be realized; the defect that toxic gas such as dioxin is generated by directly sintering the sludge is effectively overcome, meanwhile, the sintered porous brick with excellent performance and wide application is obtained, organic matter inthe sludge is fully utilized in the whole process to generate energy, and reduction, harmlessness and final resource utilization of the whole process of the raw sludge are achieved.
本发明属于固体废弃物资源化利用领域，涉及一种制备烧结多孔砖的方法和系统。该方法包括：将原污泥或污泥与餐厨沼渣混合物热水解得固液混合物；将固液混合物固液分离得固相和液相；将固相与成型剂混合均匀后压制成型得含水率为20～30％的成型胚料；将成型胚料进行无氧微波热解得预热胚料；将预热胚料进行富氧高温烧结，冷却，得多孔砖。本发明能够实现污泥中重金属的高效固化以及有机质的充分燃烧，有效避免了污泥直接烧结产生二噁英等有毒气体的不足，同时得到性能优异且用途广泛的烧结多孔砖，整个过程充分利用污泥中的有机物产生能源，实现了原污泥全流程的减量化、无害化和最终的资源化利用。
Method and system for preparing porous bricks from raw sludge
The invention belongs to the field of solid waste resource utilization, and relates to a method and a system for preparing a sintered porous brick. The method comprises the following steps: carrying out pyrohydrolysis on raw sludge or a mixture of sludge and kitchen biogas residues to obtain a solid-liquid mixture; carrying out solid-liquid separation on the solid-liquid mixture to obtain a solidphase and a liquid phase; uniformly mixing the solid phase with a forming agent, and carrying out compression molding to obtain a formed green body with the water content of 20-30%; carrying out anaerobic microwave pyrolysis on the formed green body to obtain a preheated green body; and carrying out oxygen-enriched high-temperature sintering on the preheated green body, and cooling the sintered brick to obtain the porous brick. According to the invention, efficient solidification of heavy metals in sludge and sufficient combustion of organic matters can be realized; the defect that toxic gas such as dioxin is generated by directly sintering the sludge is effectively overcome, meanwhile, the sintered porous brick with excellent performance and wide application is obtained, organic matter inthe sludge is fully utilized in the whole process to generate energy, and reduction, harmlessness and final resource utilization of the whole process of the raw sludge are achieved.
本发明属于固体废弃物资源化利用领域，涉及一种制备烧结多孔砖的方法和系统。该方法包括：将原污泥或污泥与餐厨沼渣混合物热水解得固液混合物；将固液混合物固液分离得固相和液相；将固相与成型剂混合均匀后压制成型得含水率为20～30％的成型胚料；将成型胚料进行无氧微波热解得预热胚料；将预热胚料进行富氧高温烧结，冷却，得多孔砖。本发明能够实现污泥中重金属的高效固化以及有机质的充分燃烧，有效避免了污泥直接烧结产生二噁英等有毒气体的不足，同时得到性能优异且用途广泛的烧结多孔砖，整个过程充分利用污泥中的有机物产生能源，实现了原污泥全流程的减量化、无害化和最终的资源化利用。
Method and system for preparing porous bricks from raw sludge
一种采用原污泥制备多孔砖的方法和系统
PAN LANJIA (Autor:in) / WANG YIN (Autor:in) / LI JIE (Autor:in) / LIN QINGHUAI (Autor:in)
07.08.2020
Patent
Elektronische Ressource
Chinesisch
Technological method for preparing autoclaved bricks from sludge
| Europäisches Patentamt | 2022
Method used for preparing sintered bricks with modified sludge
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2022
Method for preparing sintered bricks by compounding modified fly ash with river sludge
| Europäisches Patentamt | 2023